Aksha's Final Bulwark

The full title of this work is "Shadow Light α Side Story: Aksha's Final Bulwark." The theme song "ALS" (by Ming Menghua) is now available on QQ Music. Feel free to listen for free. War has never ceased, and war will eventually destroy civilization. A war weapon called "Reconstruction Element" was invented and used, shattering and reconstructing souls, stalling the progress of civilization. Humanity built a sky nation upon the ruins of centuries past, but even retreating to the sky, they are still plagued by the pollution of the earth. He once walked alone on the polluted land and slept in a cryo-chamber. Now, he has been awakened to become the commander of a Pioneer Corps. The reunion between her and him is also the reunion between you and the story. After millennia of solitude and guardianship, do love and promises still remember the way home? — Description from novelcodex.org